Performance used to dictate that a mirrorred set was faster. However if you
are running with any of the newer raid controllers the difference is
negligable. 

David Spearman  County of Henrico

-----Original Message-----
From: Robert Johannes [mailto:ROBERT_JOHANNES AT udlp DOT com]
Sent: 02 November, 2001 10:40
To: nb
Subject: [Veritas-bu] Raid5 or mirrored?


I'm setting up a file system for /usr/openv using volume manager with
four disks, and I'm wondering if it would be better to make it a raid5
system, or a concatenated mirror.  If I use mirroring, then my disk
space is limited to that of the two disks, but with raid5, I get an
extra disk space.  For performance reasons, what would be the best
layout of disks?

thanks
robert
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